Ductless Downflow Workstations

  • Downward airflow protects operator
    from fume and particle hazards.
  • Unrestricted front and side access to work area.
  • Easy to change filter.
  • Improved filter clamping eliminates.
    bypass leakage.
  • Low airflow alarm.
  • High capacity filters.
  • DWS48, shown



A. Filter I.D. Window: A strategically placed front cover window shows the installed filter part number and installation date for convenience and to encourage timely filter replacement.

B. Control Panel: Electronic controls and displays include switches for the blower, low airflow alarm and electronic hour counter.

C. Steel Support Frame: The chemical resistant epoxy coated steel frame adds mechanical strength. Optional all polypropylene construction is available if desired; see accessories.

D. Electrostatic Pre-Filter: The 99.5% effective electrostatic pre-filter can be changed from below the work surface while unit is operating, to prevent user exposure to chemical vapors and powders trapped in the filter.

E. Color: The cabinet is white with blue trim; optional side panels and front sash are clear. (Black color also available, see Options and Accessories.)

F. Airflow Alarm: A continuous air velocity monitoring system alerts the operator upon unacceptable values.

G. Internal Manual Speed Controller: Authorized personnel may set the centrifugal fan motor speed as desired.

H. Stand: Optional mobile cart with locking casters.

I. Work Surface: Under the perforated stainless steel internal work surface is a polypropylene tray to retain any spillage.

J. Filter Door Key: Filter access keys prevent unauthorized removal or accidental exposure to dirty filters.

K. Integral Lighting: A vapor proof fluorescent lamp illuminates the interior of the workstation.


Side Panels and Front Sash: (Optional) When installed, optional side panels and optional front sash provide better containment of hazardous vapors. The Front Sash is easy to open and close.

270 Degree Visibility: Unrestricted user access to the front and sides of the workstation also admits ambient illumination and provides an unobstructed view of its contents.

Standards Compliant: Performance specifications and construction meet or exceed OSHA, ANSI and relevant international standards to assure operator safety.

Construction: All models are available in either metal or polypropylene construction. See selection chart for specifications and dimensions. Specify metal or polypropylene when ordering. Available in 110V, 60Hz or 220V, 50Hz models.